Sheet metal roofing



Oct. 1, 1946. G. H. HUNTINGTON SHEET METAL ROOFING Filed Jan. 19, 1945 IN VEN TOR.

Patented Oct. 1, 1946 UNITED lsrslls PATENT orifice Glen H. Huntington, Denver, Colo.. Application January 19, 1945', SjeralQNo.v 573,519

This invention relates to sheet metal roofing, and has for its principal object the provision of roong of this character in combination with eicient attachment means which will allow the roofing to be accurately and rapidly laid by in experienced help; which will eliminate the necessity for holes in the roofing; and which will allow lateral and longitudinal heat expansion of the roofing without loosening the attachment and without liability of leakage.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efliciency. These will become more apparent from the following description.

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a fragmentary perspective view illustrating the method of applying th'e improved roofing;

Fig. 2 is a detail perspective view illustrating one form of an improved attachment clip employed in combination with the improved roofing;

Fig. 3 is a detail perspective View illustratinga typical joint as employed-in the improved roofing, with a seco-nd form of attachment clip;

Fig. 4 is a detail perspective View illustrating the second form of clip;

Fig. 5 is a similar View illustrating the first formvof clip; and

Fig. 6 is an enlarged section through a completed roof joint in which the first form of clip is employed.

In the drawing, typical sheathing for supporting the roofing is indicated at IB. The improved roofing consists of elongated strips of sheet metal or other suitable material II, the longitudinal edges of which are turned upwardly at right angles to form edges flanges I2. The strips II are secured in place on the sheathing Ill by means of attachment clips of special design.

Two forms of clips are illustrated, both of y which function similarly and both of which comprise metallic plates to benailed to the sheathing I between the strips of rcoflngand having means for engaging and supporting the upturned flanges I2. One form of clip is illustrated at in Figs. 2, 5, and 6. A second form of lclip is illustrated in Figs. 1, 3, and14. The second form of clip comprises a metallic plate I3 having a f central hole I4 for receiving a nail, screw, or bolt,

or other attachment device. The extremities of the plate I3 are split so as to form three tabs at each end. The two outer tabs at each' end, indicated at I5, are bent into alignment at right angles to the plane of the plate. The third tab at each' end, indicated at I5, is similarly bent so as to be in parallel spaced relation within the tabs I5.

In applying the roofing, the strips II are laid on the sheathing I0 in parallel relation, as shown at the left of Fig. 1. The plates I3 are then placed over'the adjacent flanges I2 of the two adjacent strips so that the former will pass between the tabs I5 and I6, as shown on the middle joint of Fig. l. The plates are nailed in place b-y means of suitable nails or other devices I1 passing through the holes I4. The nails are driven sufficiently far to bring theplates I3 snugly against the upper edges of the flanges I2.

It will be noted that the strips II are now rmly held against the sheathing in accurate spaced relation. They can, however, shift longitudinally by sliding between the tabs I5 and I6 to accommodate temperature changes. Transverse expansion and contraction is accommodated by flexure of the flanges I2.

After the clips are in place, an inverted troughlike cover I8'is forced downwardly over the completed joint. The sides of the trough have a normal separation less thanthe width of the y space between the plates, so that the trough must be spread slightly before it can-be forced down- Lli) wardly over the clips. The cover is provided with upwardly turned edges I9, which will snap under the tabs I5 when th'e cover reaches its final position so as to firmly lock the latter in place. The inherent resiliency in the cover causes it to firmly engage the flanges I2 so as to form a weather type joint therebetween.

yIn Figs. 2, 5, and 6 an alternate form of attachment clip is illustrated, comprising a plate 20 having a central nail hole 2I and upwardly turned ends 22. The ends terminate in downwardly turned extremities 23. The height of the ends is slightly less than the height of the flanges I2. This clip is placed in position similarly to the previously described clip by driving a nail 24 through the hole 2| after the downwardly turned extremities 23 have engaged the flanges I2. The nail isidriven completely into the sheathing I0 so as to bring the plate 2i! snugly thereagainst.

The cover I8 snaps below the extremities 23 as in th'e previous form. This form has an advantage over the previous form in that the nail 24 can be driven completely vinto the sheathing IIJ without damaging the anges I2. The upturned ends 22 are joined to the plate by diagonal bends 25 which allow exing of the entire clip to accommodate expansion and contraction, as well as irregularities in the sheathing I0.

While a specic form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claim, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

Means for forming a joint between elongated strips of sheet metal roofing of the type having upwardly anged longitudinal edges and for securing said strips to supporting sheathing comprising: a plate member having a central nail hole; an upwardly turned portion on each end of said plate; a downwardly turned extremity on each of said portions` said latter extremities being hooked over the adjacent anged longitudinal edges of the strips, the height of said upwardly turned portions being substantially equal to the height of the flanged longitudinal edges of the elongated strips so that the mid-portion of the plate may be nailed snugly against the sheathing with its extremities overlying the flanged longitudinal edges of said strips, said downwardly turned extremities terminating above the surface of said strips; an inverted trough-like cover member;4 downwardly turned longitudinal sides on said cover member engaging the downwardly turned extremities on said plate; and upwardly and inwardly turned edges on Sides positioned between the downwardly turned 'extremities of said plate and the surface of the strips to prevent upward movement of said trough-like cover.

GLEN H. HUNTINGTON. 

